The old rats appeared newly invigorated after receiving their injections. As hoped, the cardiac stem cells improved heart function yet also provided additional benefits. The rats' fur fur, shaved for surgery, grew back more quickly than expected, and their chromosomal telomeres, which commonly shrink with age, lengthened.
The old rats receiving the cardiac stem cells also had increased stamina overall, exercising more than before the infusion.
"It's extremely exciting," said Dr. Eduardo Marbn, primary investigator on the research and director of the Cedars-Sinai Heart Institute. Witnessing "the systemic rejuvenating effects," he said, "it's kind of like an unexpected fountain of youth."
"We've been studying new forms of cell therapy for the heart for some 12 years now," Marbn said.
Some of this research has focused on cardiosphere-derived cells.
"They're progenitor cells from the heart itself," Marbn said. Progenitor cells are generated from stem cells and share some, but not all, of the same properties. For instance, they can differentiate into more than one kind of cell like stem cells, but unlike stem cells, progenitor cells cannot divide and reproduce indefinitely.
Since heart failure with preserved ejection fraction is similar to aging, Marbn decided to experiment on old rats, ones that suffered from a type of heart problem "that's very typical of what we find in older human beings: The heart's stiff, and it doesn't relax right, and it causes fluid to back up some," Marbn explained.
He and his team injected cardiosphere-derived cells from newborn rats into the hearts of 22-month-old rats -- that's elderly for a rat. Similar old rats received a placebo injection of saline solution. Then, Marbn and his team compared both groups to young rats that were 4 months old. After a month, they compared the rats again.
Even though the cells were injected into the heart, their effects were noticeable throughout the body, Marbn said
"The animals could exercise further than they could before by about 20%, and one of the most striking things, especially for me (because I'm kind of losing my hair) the animals ... regrew their fur a lot better after they'd gotten cells" compared with the placebo rats, Marbn said.
The rats that received cardiosphere-derived cells also experienced improved heart function and showed longer heart cell telomeres.
Why did it work?
The working hypothesis is that the cells secrete exosomes, tiny vesicles that "contain a lot of nucleic acids, things like RNA, that can change patterns of the way the tissue responds to injury and the way genes are expressed in the tissue," Marbn said.
It is the exosomes that act on the heart and make it better as well as mediating long-distance effects on exercise capacity and hair regrowth, he explained.
Looking to the future, Marbn said he's begun to explore delivering the cardiac stem cells intravenously in a simple infusion -- instead of injecting them directly into the heart, which would be a complex procedure for a human patient -- and seeing whether the same beneficial effects occur.
Dr. Gary Gerstenblith, a professor of medicine in the cardiology division of Johns Hopkins Medicine, said the new study is "very comprehensive."
"Striking benefits are demonstrated not only from a cardiac perspective but across multiple organ systems," said Gerstenblith, who did not contribute to the new research. "The results suggest that stem cell therapies should be studied as an additional therapeutic option in the treatment of cardiac and other diseases common in the elderly."
Todd Herron, director of the University of Michigan Frankel Cardiovascular Center's Cardiovascular Regeneration Core Laboratory, said Marbn, with his previous work with cardiac stem cells, has "led the field in this area."
"The novelty of this bit of work is, they started to look at more precise molecular mechanisms to explain the phenomenon they've seen in the past," said Herron, who played no role in the new research.
One strength of the approach here is that the researchers have taken cells "from the organ that they want to rejuvenate, so that makes it likely that the cells stay there in that tissue," Herron said.
He believes that more extensive study, beginning with larger animals and including long-term followup, is needed before this technique could be used in humans.
"We need to make sure there's no harm being done," Herron said, adding that extending the lifetime and improving quality of life amounts to "a tradeoff between the potential risk and the potential good that can be done."
Capicor hasn't announced any plans to do studies in aging, but the possibility exists.
After all, the cells have been proven "completely safe" in "over 100 human patients," so it would be possible to fast-track them into the clinic, Marbn explained: "I can't tell you that there are any plans to do that, but it could easily be done from a safety viewpoint."
Read the original here:
Cardiac stem cells rejuvenate rats' aging hearts, study says - CNN - CNN
- Stem Cell Therapy for Kidney Failure [Last Updated On: April 1st, 2011] [Originally Added On: April 1st, 2011]
- Dogged by pain -- stem cell therapy for dogs [Last Updated On: June 24th, 2013] [Originally Added On: April 3rd, 2011]
- Dogs now getting stem cell therapy [Last Updated On: April 8th, 2011] [Originally Added On: April 8th, 2011]
- Stem Cells for Spinal Cord Injury: Community Outreach San Diego 2011 - Trish Stressman [Last Updated On: April 11th, 2011] [Originally Added On: April 11th, 2011]
- Stem Cell Treatment Doing Wonders For Autistic Boy [Last Updated On: April 14th, 2011] [Originally Added On: April 14th, 2011]
- Is Stem Cell Therapy right for your pet [Last Updated On: April 14th, 2011] [Originally Added On: April 14th, 2011]
- Regenerative Medicines [Last Updated On: May 19th, 2011] [Originally Added On: May 19th, 2011]
- Stem Cell Therapy for Multiple Sclerosis [Last Updated On: June 24th, 2013] [Originally Added On: May 20th, 2011]
- Adult Stem Cell Therapy for Multiple Sclerosis [Last Updated On: May 23rd, 2011] [Originally Added On: May 23rd, 2011]
- Heart Failure Patient After Adult Stem Cell Therapy [Last Updated On: June 24th, 2013] [Originally Added On: May 30th, 2011]
- Stem Cell Therapy For Alzheimer's/Dementia [Last Updated On: June 24th, 2013] [Originally Added On: June 2nd, 2011]
- Stem Cell Therapy For Alzheimer's/Dementia [Last Updated On: June 7th, 2011] [Originally Added On: June 7th, 2011]
- Stem Cell Therapy Injections [Last Updated On: June 24th, 2013] [Originally Added On: June 8th, 2011]
- Clinical Advances in Adult Stem Cell Therapy: Dr. Jorge Paz [Last Updated On: June 24th, 2013] [Originally Added On: June 11th, 2011]
- Stem Cell Therapy MS: Sam Harrell and The Superbowl [Last Updated On: June 12th, 2011] [Originally Added On: June 12th, 2011]
- Stem Cell Therapy MS: Sam Harrell and The Superbowl [Last Updated On: June 24th, 2013] [Originally Added On: June 14th, 2011]
- Lou Gehrig's Disease (ALS): UCSD Team's Stem Cell Therapy Rationale [Last Updated On: June 14th, 2011] [Originally Added On: June 14th, 2011]
- Stem Cell Injection Treatment - Stem Cell Therapy [Last Updated On: June 18th, 2011] [Originally Added On: June 18th, 2011]
- edivet America Dog Arthritis Stem Cell Therapy Stem Cell Therapy for Equine 1 [Last Updated On: June 24th, 2013] [Originally Added On: June 23rd, 2011]
- Lou Gehrig's Disease (ALS): UCSD Team's Stem Cell Therapy Approach [Last Updated On: June 25th, 2011] [Originally Added On: June 25th, 2011]
- Adult Stem Cell Therapy Clinical Advances - Dr. Jorge Paz in San Diego, CA March 2011 [Last Updated On: July 3rd, 2011] [Originally Added On: July 3rd, 2011]
- Adult Stem Cell Therapy Clinical Advances - Dr. Jorge Paz in San Diego, CA March 2011 [Last Updated On: June 24th, 2013] [Originally Added On: July 15th, 2011]
- Duffy Gets Stem Cell Therapy [Last Updated On: June 24th, 2013] [Originally Added On: July 15th, 2011]
- WAVE3 News Adipose Stem Cell Therapy [Last Updated On: June 24th, 2013] [Originally Added On: July 16th, 2011]
- Lou Gehrig's Disease (ALS): UCSD Team's Stem Cell Therapy Approach [Last Updated On: June 24th, 2013] [Originally Added On: July 16th, 2011]
- Clinical Advances in Adult Stem Cell Therapy - Dr. Jorge Paz Rodriguez (Miami) [Last Updated On: June 24th, 2013] [Originally Added On: July 21st, 2011]
- Stem Cell Therapy for Cerebral Palsy - Holly Catalano [Last Updated On: June 24th, 2013] [Originally Added On: August 2nd, 2011]
- Bone Marrow Aspiration - Stem Cell Therapy [Last Updated On: August 5th, 2011] [Originally Added On: August 5th, 2011]
- Dr. Chein discusses Autologous Stem Cell Therapy - Palm Springs [Last Updated On: June 24th, 2013] [Originally Added On: August 12th, 2011]
- Stroke Victim Improved With Stem Cell Therapy. More at http://www.stemcellfusion.com [Last Updated On: June 24th, 2013] [Originally Added On: August 14th, 2011]
- Dr. Craig Saunders Adult Stem Cell Therapy [Last Updated On: August 15th, 2011] [Originally Added On: August 15th, 2011]
- Embryonic stem cell therapy in China (www.esctherapy.com) [Last Updated On: June 24th, 2013] [Originally Added On: August 16th, 2011]
- Ying Liu discusses IPS cell therapy for ALS [Last Updated On: June 24th, 2013] [Originally Added On: August 16th, 2011]
- Stem Cell Therapy: Healing Force of the future [Last Updated On: September 19th, 2011] [Originally Added On: September 19th, 2011]
- Benefits of STEM CELL THERAPY - Adipose Tissue [Last Updated On: September 22nd, 2011] [Originally Added On: September 22nd, 2011]
- Stem Cell Therapy Skin Repair and Anti-Wrinkle Cream [Last Updated On: June 24th, 2013] [Originally Added On: September 24th, 2011]
- Cardiac Stem Cell Therapy [Last Updated On: June 24th, 2013] [Originally Added On: September 24th, 2011]
- Holly Huber on Recovery: Stem Cell Therapy for Multiple Sclerosis Community Outreach Dallas, TX 2011 [Last Updated On: June 24th, 2013] [Originally Added On: September 24th, 2011]
- Stroke Victim Improved With Stem Cell Therapy. More at http://www.stemcellfusion.com [Last Updated On: September 25th, 2011] [Originally Added On: September 25th, 2011]
- A Touch of Love® - Stem Cell Therapy for Pets-Dr. Danny DeRose-Part 3 [Last Updated On: September 27th, 2011] [Originally Added On: September 27th, 2011]
- Adult Stem Cell Therapy for Multiple Sclerosis [Last Updated On: June 24th, 2013] [Originally Added On: September 28th, 2011]
- Multiple Sclerosis Stem Cell Therapy News Coverage [Last Updated On: June 24th, 2013] [Originally Added On: October 1st, 2011]
- The Spinal Cord Journey - Stem cell therapy stories from three spinal cord injury patients [Last Updated On: October 6th, 2011] [Originally Added On: October 6th, 2011]
- Peyton Manning Stem Cell Therapy: Some Doctors Cry Foul Over European Treatment - Video [Last Updated On: October 13th, 2011] [Originally Added On: October 13th, 2011]
- Stem-Cell-Therapy-in-China.wmv - Video [Last Updated On: October 13th, 2011] [Originally Added On: October 13th, 2011]
- Randolph veterinarian uses new stem cell therapy on ailing pets - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 13th, 2011]
- Stem Cell Therapy for Rheumatoid Arthritis - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 14th, 2011]
- Holly Huber on Recovery: Stem Cell Therapy for Multiple Sclerosis Community Outreach Dallas, TX 2011 - Video [Last Updated On: October 14th, 2011] [Originally Added On: October 14th, 2011]
- Affordable Stem Cell Therapy in Guatemala (2hrs from Miami) - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 15th, 2011]
- Stem Cell Research: Macular Degeneration - Video [Last Updated On: October 18th, 2011] [Originally Added On: October 18th, 2011]
- Duffy Gets Stem Cell Therapy - Video [Last Updated On: October 18th, 2011] [Originally Added On: October 18th, 2011]
- VetCell's StemRegen - the original and best stem cell therapy for equine tendon injuries - Video [Last Updated On: October 20th, 2011] [Originally Added On: October 20th, 2011]
- Macular degeneration - Stem Cell therapy (English subtitles) - Video [Last Updated On: October 20th, 2011] [Originally Added On: October 20th, 2011]
- Stem Cell Therapy for Rheumatoid Arthritis - Community Outreach Dallas - Darnell Morris - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 21st, 2011]
- Adult Stem Cell Therapy for Congestive Heart Failure [Last Updated On: June 24th, 2013] [Originally Added On: October 21st, 2011]
- Stem Cell Therapy for Critical Limb Ischemia: First Choice or Last Ditch? - Video [Last Updated On: October 22nd, 2011] [Originally Added On: October 22nd, 2011]
- WAVE3News Adipose Stem Cell Therapy - Video [Last Updated On: October 22nd, 2011] [Originally Added On: October 22nd, 2011]
- Stem Cell Therapy in Cardiac Disease - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 24th, 2011]
- Stem Cell Treatment for Autism: Community Outreach Miami, Florida - May 2011 - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 24th, 2011]
- Pre Post n 6 Months Post Stem Cell Therapy of Dystonic Cerebral Palsy - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 24th, 2011]
- Stem Cell Treatment for Rheumatoid Arthritis - "I am basically pain free." - Video [Last Updated On: October 26th, 2011] [Originally Added On: October 26th, 2011]
- UMBILICAL CORD STEM CELL THERAPY - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 26th, 2011]
- Stem Cell Therapy for Peripheral Artery Disease - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 26th, 2011]
- Multiple Sclerosis Adult Stem Cell Therapy - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 26th, 2011]
- Stem Cell Therapy for Multiple Sclerosis Stimulates IDO - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 26th, 2011]
- HIV/AIDS: Spotlight on Stem Cell Research - John Zaia - Video [Last Updated On: October 26th, 2011] [Originally Added On: October 26th, 2011]
- Stem cell treatment by Adiva Health Care India after Spinal Cord Injury - Video [Last Updated On: October 27th, 2011] [Originally Added On: October 27th, 2011]
- Stem Cell Treatment for Spinal Cord Injury - Video [Last Updated On: October 28th, 2011] [Originally Added On: October 28th, 2011]
- Lou Gehrig's Disease: Stem Cell Therapy Pre-Clinical Studies - Video [Last Updated On: October 28th, 2011] [Originally Added On: October 28th, 2011]
- Stem Cell Treatment for Spinal Cord Injury - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 28th, 2011]
- Holly Huber on Recovery: Stem Cell Therapy for Multiple Sclerosis Community Outreach San Diego CA - Video [Last Updated On: June 24th, 2013] [Originally Added On: October 28th, 2011]
- Stem Cell Treatment for Rheumatoid Arthritis - "I got my life back" - Video [Last Updated On: October 28th, 2011] [Originally Added On: October 28th, 2011]
- Adult Stem Cell Therapy Following Heart Attack and Stroke - Video [Last Updated On: October 28th, 2011] [Originally Added On: October 28th, 2011]
- Stem Cells - Treatment for Autism - Video [Last Updated On: November 2nd, 2011] [Originally Added On: November 2nd, 2011]
- Stem Cell Treatment Diabetes - Video [Last Updated On: November 7th, 2011] [Originally Added On: November 7th, 2011]
- Stem Cell Therapy: Psoriatic Arthritis Treatment - Video [Last Updated On: June 24th, 2013] [Originally Added On: November 8th, 2011]
- Stem Cell Therapy Cure Hair Loss. More at http://www.stemcellfusion.com - Video [Last Updated On: June 24th, 2013] [Originally Added On: November 10th, 2011]
- BioLogic Stem Cell Therapy - Video [Last Updated On: November 16th, 2011] [Originally Added On: November 16th, 2011]
- BioLogic Stem Cell Therapy - Video [Last Updated On: June 24th, 2013] [Originally Added On: November 16th, 2011]
- AVS Stem Cell Therapy - Video [Last Updated On: June 24th, 2013] [Originally Added On: November 17th, 2011]